Gouk & Sullivan (BOP) Limited for Armature Winding and Electrical Engineering - Kawerau - New Zealand.

Facilities & Capacity

Gouk & Sullivan (BOP) is based in Kawerau, Bay of Plenty – in the centre of the North Island, within 3 hours drive of central Auckland and 5 hours’ drive from Wellington City.

The high stud workshop of 1500 square metres in size is dedicated to the servicing and repairing of all types and sizes of electrical machines and control equipment. The access in and around the building is excellent with ample space for trucks and articulated trailers to load and offload.

The workshop gantry crane has a lifting capacity of 12.6 tonne, (2 x 6.3 tonne cranes). Much larger loads can be lifted inside the workshop using mobile cranes. Machines can be offloaded onto the floor where they can be dismantled using the overhead cranes.

Armature & Stator Rewinding

Thermostatically controlled burn-out oven
Three baking ovens, up to 10m3
Varnish tanks with various grades of polyester varnish
Formed Coil spreader
Various winding machines, in excess of 1 tonne capacity

Coil manufacturing & Refurbishment

Hydraulic coil press for consolidated coils up to approx.1m x 2m, with a pressing capacity of 42 tonnes

Test & Diagnosis

AC & DC Motor Test board
Variable Speed Drive for testing large motors
Surge Tester for diagnosing winding faults
RSO testing of rotor pole windings
On-line partial discharge testing
Magnetic particle crack testing of mechanical parts
In-situ dynamic balancing of rotating machines

Machine Overhaul

Oxy / Acetylene & Propane heating equipment
Induction heaters for bearing installation
Various pulling equipment, up to 80 tonne
Large range of pneumatic tooling

Cleaning & Painting

Dedicated wash-down bay with retention pit
Large steam cleaner, with capacity for detergent addition
Caustic bath
Various aeration baths
Bead blasting booth
Paint booth with full extraction & filter system

Machine Shop

3 Centre Lathes ranging from 3m long with 800mm swing, to 1m long with 360mm swing.
Large universal milling machine
Large slotting machine with 330mm stroke
Drill press with capacity to diameter 50mm
Large metal cutting band saw with capacity to diameter 330mm
Broach press for internal keyways


MIG, TIG & Arc welding
Gas cutting
Belt sander & grinding
New shafts and other parts are manufactured to customer specifications as required, and mechanical repairs are undertaken covering shafts, bearings, housings and general welding operations.

We can also offer a full on-site repair service, including motor rewinding, overhauling and balancing, together with a preventative maintenance inspection facility. We endeavour to provide solutions to all your electric motor problems.

We provide a full 24 hour, seven day service and look forward to meeting with you to discuss your particular requirements.